渭河盆地黄土中活断层破碎物的SEM形貌特征

SEM Study on the fragments From active faults in loess of Weihe basin

本文研究了渭河盆地三条活断层的破碎物的SEM特征,发现黄土中的石英砂与黄土中断层破碎石英碎屑的SEM特征差别极大。如果鉴别出那些只有在断层活动的高应力作用下才能出现的特殊形貌,仍然可以根据石英碎屑的SEM形貌特征判别黄土中断层的活动性质。

The SEM study on the fragment from three active faults in the loess of weihe basin revealed that the quartz fragments from faults in loess differ significantly from the ordinary ones in loess. The particular morphology of quartz fragments which was possble formed only under intense stress during faults actively permits the identification of the nature of faults actively in loess by using SEM.